overnight in the streets of boston celebrations, law enforcement hailed as heroes. day six, as tsarnaev lay sedated and unable to speak from a neck injury, federal prosecutors prepare charges against him. pamela brown, cnn, boston, massachusetts. >>> what a week it has been. the victims, the wounded are still healing. people are still grieving, and dzhokhar tsarnaev still lying in that hospital bed, handcuffed to the bed, waiting to face justice. >> a wide-ranging investigation still ongoing. >>> still ahead, something for air passengers to watch out for now. >>> if you are traveling but lufthansa in or around europe, you will want to hear this. stay with us. the details about a major strike. yoyw97 >>> welcome back. you're watching a special edition of "cnn newsroom." let's turn to business news now. it's travel news, too. a major strike on monday at lufthansa effecting travel in and around europe. the german airline is cancelling nearly 1,700 flights after a walkout over wages. thousands of airline staffers want a pay increase. they want 5%, lufthansa is offering